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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef ASS_IO_H
#define ASS_IO_H
#include "lib/assimp/include/assimp/IOStream.hpp"
#include "lib/assimp/include/assimp/IOSystem.hpp"
class CFileHandler;
// Custom implementation of Assimp IOStream to support Spring's VFS
// Required because Assimp models often need to load textures from other files
class AssVFSStream : public Assimp::IOStream
{
friend class AssVFSSystem;
CFileHandler* file;
protected:
// Constructor protected for private usage by AssVFSSystem
AssVFSStream(const std::string& pFile, const std::string& pMode);
public:
~AssVFSStream(void);
size_t Read( void* pvBuffer, size_t pSize, size_t pCount);
size_t Write( const void* pvBuffer, size_t pSize, size_t pCount);
aiReturn Seek( size_t pOffset, aiOrigin pOrigin);
size_t Tell() const;
size_t FileSize() const;
void Flush ();
};
// Spring VFS Filesystem Wrapper for Assimp
class AssVFSSystem : public Assimp::IOSystem
{
public:
AssVFSSystem() { }
~AssVFSSystem() { }
// Check whether a specific file exists
bool Exists( const char* pFile) const override;
// Get the path delimiter character we'd like to get
char getOsSeparator() const override;
// open a custom stream
Assimp::IOStream* Open( const char* pFile, const char* pMode = "rb" ) override;
void Close( Assimp::IOStream* pFile) override;
};
#endif // ASS_IO_H
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